Machine Troubleshooting Guide - Lincoln Electric IDEALARC CV-250 Operator's Manual

Lincoln electric welder user manual
Table of Contents

Advertisement

E-3

MACHINE TROUBLESHOOTING GUIDE

Not all trouble conditions can be recognized by the PC board, and displayed as error codes. The following guide
covers most other trouble conditions.
PROBLEMS
(SYMPTOMS)
Machine has no output.
Machine has minimum output and no
control.
Machine has low output and no con-
trol.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
PROBLEMS
1. Secondary contactor circuit (2
and 4 wire feeder receptacle) not
working.
2. Electrode or work lead loose or
broken.
3. Defective PC Board.
4. Protective circuits operating due
to output short circuit.
5. If using an LN-25, K484 jumper
plug kit not making connection
between 2 & 4 in wire feeder
receptacle.
6. If welding with 1/16" aluminum
wire and machine is flashing E00.
1. Voltage Control misconnected.
1. Open in feedback circuitry.
2. Faulty PC Board.
3. Voltage Adjust potentiometer
circuit open (lead 75).
1. Check 2 and 4 circuit wiring.
2. Repair connection.
3. See PC Board Troubleshooting
4. Turn power off. Remove output short
5. Check for continuity between pins C
6. a) Turn power off to clear error. Use
1. Voltage Control wiring.
1. Check wiring and control and PC
2. See PC Board Troubleshooting
3. Check and replace potentiometer if
CAUTION
CV-250
RECOMMENDED
COURSE OF ACTION
Procedure.
circuit.
& D in the K484.
recommended wfs, voltage set-
tings and angle of approach of
wire to work.
b) If problem still persists, call Local Lincoln
Authorized Field Service Facility.
board wiring harness plugs.
Procedure.
faulty. Check wiring of lead #75.
E-3

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents